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35results about How to "Environmental coordination" patented technology

Back film of solar cell and preparing technique thereof

The invention discloses a solar panel back film and a technique for manufacturing the same. The back film comprises a PET film substrate with thickness of between 100 and 350 micrometers, wherein, fluoropolymer coatings with thickness of between 15 and 30 micrometers are coated on both sides of the substrate; an adhesive layer with thickness of between 0.5 and 5 micrometers is coated on the fluoropolymer coating on one side; the fluoropolymer coatings are obtained by direct coating of mixed latex which is obtained through mixture of various raw material compositions according to the mixture ratio and subsequent grinding treatment on the PET film substrate; the compositions by mass ratio of the raw materials of the fluoropolymer coatings are 30 to 55 percent of fluoride coating materials, 20 to 40 percent of solvent, 2 to 6 percent of cross-linking agent and curing agent and 15 to 40 percent of filling. The technique greatly improves the bonding strength between a back film layer and a layer, improves the ageing resistance, the weathering resistance of products, simultaneously improves the insulativity and the vapor permeability resistance due to the design of a multilayered structure and also can design and modify the performance and the appearance of the products as required.
Owner:ZHEJIANG VENTURA PHOTOVOLTAIC MATERIALS +2

Back film of solar cell and preparing technique thereof

The invention discloses a solar panel back film and a technique for manufacturing the same. The back film comprises a PET film substrate with thickness of between 100 and 350 micrometers, wherein, fluoropolymer coatings with thickness of between 15 and 30 micrometers are coated on both sides of the substrate; an adhesive layer with thickness of between 0.5 and 5 micrometers is coated on the fluoropolymer coating on one side; the fluoropolymer coatings are obtained by direct coating of mixed latex which is obtained through mixture of various raw material compositions according to the mixture ratio and subsequent grinding treatment on the PET film substrate; the compositions by mass ratio of the raw materials of the fluoropolymer coatings are 30 to 55 percent of fluoride coating materials, 20 to 40 percent of solvent, 2 to 6 percent of cross-linking agent and curing agent and 15 to 40 percent of filling. The technique greatly improves the bonding strength between a back film layer and alayer, improves the ageing resistance, the weathering resistance of products, simultaneously improves the insulativity and the vapor permeability resistance due to the design of a multilayered structure and also can design and modify the performance and the appearance of the products as required.
Owner:ZHEJIANG VENTURA PHOTOVOLTAIC MATERIALS +2

Multi constituent niobate lead-free piezoelectric ceramics

The invention discloses a piezoelectricity ceram of multicomponent niobate base without lead belonging to the field of environmental coordination piezoelectricity ceram, which is represented by the general formula (1-x)(Li1-y-zNayKz)(Nb1-u-vTauSbv)O3+xAg(Sb1-Delta-ThetaTaDeltaNbTheta)O3 or adding aMAlphaOBeta(wt%), wherein 0 C04B 35 / 495 C04B 35 / 622 H01L 41 / 187 0 7 1 2007 / 4 / 20 101037332 2007 / 9 / 19 000000000 Sichuan University 610065 Xiao Dingquan Wang Yuanyu Wu Jiagang Zhu Jianguo Yu Ping Wu Lang liushuang lan yanli hua 51202 The Patent Agency of Chengdou University of Science and Technology Mozi Bridge, the City of Chengdou, Sichuan Province 610065
Owner:SICHUAN UNIV

Solid-phase sintering technique for manufacturing bismuth titanate orientation ceramic

InactiveCN101219892AOrientation rate controllableSimple processAdhesiveCrucible
The invention relates to a method of solid state sintering for preparing bismuth titanate orientation ceramic, which is characterized in that analytical pure bismuth oxide (Bi2O3) and spectrum pure titanium oxide (TiO2) are taken as materials; the weight percentage of the analytical pure bismuth oxide (Bi2O3) is 72 to 84 percent, and the weight percentage of the spectrum pure titanium oxide (TiO2) is 18 to 26 percent; after fully ball-milled and mixed, the material is filled inside an alumina crucible; pre-synthesizing is carried out for three times under 760 DEG C to 800 DEG C, and the heat preservation time of per-synthesizing for each time is 8 to 24 hours; the per-synthesized powers are added with adhesive and then shaped, discharged and sintered for 2 to 20 hours under 1,140 DEG C, thus obtaining the bismuth titanate orientation ceramic. The method of solid state sintering is simple in process and good in material availability; the solid state sintering in the prior art is adopted and oxide purchased in the market is used as material; the obtained material has good ferroelectric and piezoelectric performance.
Owner:YANGZHOU UNIV

Environment-coordinating method for preparing titanate piezoelectric ceramic powder

The invention discloses an environment-coordinating method for preparing titanate piezoelectric ceramic powder, and the method is characterized in that lactic acid is chelating agent, swelling agent and pore-forming agent, sol is prepared under the normal temperature by utilizing a sol-gel method, after the pH value is adjusted, the sol is vacuum concentrated or removed with solvent under constant pressure to obtain gel, the gel is processed through unique swelling process and spontaneous combustion way under the temperature of 180 DEG C to 200 DEG C to obtain a nano pyrophoric material, and the pyrophoric material is pre-burned to obtain nano powder under the temperature of 550DEG C to 600DEG C; and the powder is processed through procedures such as granulating, tabletting, plastic releasing and the like to obtain a green sheet, the green sheet is sintered for 1 to 2h under the condition of 950DEG C to 1025DEG C to obtain a ceramic sheet, and the ceramic sheet is polarized in normal-temperature silicon oil to obtain the titanate piezoelectric ceramic powder after standing. The method has important practical significance for traditional piezoelectric ceramic production process to realize high quality, low energy consumption, low cost and environmental friendliness; and meanwhile, an important innovation effect for the titanate compound application field seeking no conglobation and having ultra-large specific surface area can be achieved.
Owner:CHINA WEST NORMAL UNIVERSITY

Unbraced expanded steel-cored aluminum stranded wire

The present invention relates to an unbraced expanded steel-cored aluminum stranded wire, belonging to the technical field of overhead transmission lines. The unbraced expanded steel-cored aluminum stranded wire is suitable for severe using environments such as high voltage, high altitude and bold wind and has the characteristics of saved material, reduced corona, reduced energy consumption, reduced vibration and prolonged service life. The unbraced expanded steel-cored aluminum stranded wire comprises an outer aluminum stranded wire layer, a hollow structure layer and a center reinforced steel stranded wire, wherein the hollow structure layer is arranged between the outer aluminum stranded wire layer and the center reinforced steel stranded wire. The hollow structure layer is annular. The outer aluminum stranded wire layer is composed of an inner aluminum conduction wire layer and an outer aluminum conduction wire layer. The inner aluminum conduction wire layer uses a T-shaped wire; and the outer aluminum conduction wire layer uses a T shaped wire, a Z-shaped wire, an S-shaped wire or a round wire. The inner aluminum conduction wire layer of the outer aluminum stranded wire is stranded leftwards, and the outer aluminum conduction wire layer of the outer aluminum stranded wire is stranded rightwards. The unbraced expanded steel-cored aluminum stranded wire is an expanded conduction wire with the characteristics of large expanding rate, stable structure, simple manufacturing process, high tensile strength of the conduction wire, and excellent self-damping performance.
Owner:SHANGHAI ZHONGTIAN ALUMINUM WIRE

Transparent display color temperature adjusting system and transparent display color temperature adjusting method

The invention provides a transparent display color temperature adjusting system and a transparent display color temperature adjusting method. The transparent display color temperature adjusting system is used to select a display mode or a fusion mode by a mode selection mode (1), and is used to provide different color temperature adjusting results according to a working mode selected by a user and the color temperature of the environment of the transparent display (4) acquired by an environmental color temperature detection module (3). When the user selects the display mode, a display color temperature adjusting mode (2) adopts preset fixed color temperature as the color temperature adjusting result. When the user selects the fusion mode, the display color temperature adjusting module (2) adopts the color temperature consistent with the color temperature of the environment of the transparent display (4) acquired by the environmental color temperature detection module (3). The transparent display (4) is used for transparent display under the corresponding color temperature under the control of the display color temperature adjusting mode (2). The adjustment of the different color temperatures according to the working mode of the transparent display is realized.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD

Planar type wideband lpda antenna applied to vhf/uhf channel

A planar type wideband LPDA antenna has an UHF band of 470 MHz to 752 MHz and comprises: a nonconductive substrate board having a low dielectric and a small loss of an electromagnetic wave; and an antenna pattern arranged on the nonconductive substrate board and having a feed point for the supply of an electric power, the feed point being connected to a TV receiver module, the antenna pattern including an UHF dipole for an UHF band and a VHF dipole for a VHF band, the UHF dipole comprising a first dipole which is the longest dipole among the UHF dipoles and the VHF dipole comprising a second dipole for a high VHF channel, the second dipole being perpendicularly connected to one end of the first dipole.
Owner:株式会社麦克斯维夫

Treatment system and method of township domestic wastewater

The invention discloses a treatment system and method of township domestic wastewater, and belongs to the technical field of wastewater treatment. The wastewater treatment system comprises a deslagging tank, a sedimentation tank, a lift pot, a multistage moving-bed biological membrane reactor, a pipeline type mixer, a fully automatic dosing machine, a settling tank, a filter, a sterilizer, a recycle water storage tank, a secondary sedimentation tank, a Babbitt gauge tank, a sludge storage tank, a sludge dewatering machine and a fan. The invention also discloses a treatment method of township domestic wastewater. The treatment system of township domestic wastewater disclosed by the invention can adapt to various complicated township wastewater treatment, has strong shockproof load capacity and solid SS hydrolysis capacity, high efficiency in denitrification and dephosphorization, low operating cost and stable treatment effect, and ensures that the effluent water quality achieves the primary A standard according to the national GB18918-2002 Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant.
Owner:胡焕荣

Control method and device of LED night lamp with environment induction

The invention discloses a control method and device of an LED night lamp with environment induction. According to the method, through orderly detecting the distances of surrounding objects, the distances are sorted, distance values which are lower than a set value are screened, the colors of the objects corresponding to the screened distance values are obtained, the color matching of the LED night lamp is carried out according to obtained colors, thus the light emitting color of the LED night lamp is controlled. By using the method of the invention, the light emitting color of the LED night lamp is changed through sensing the surrounding environment color, thus the softness of the night lamp is increased, and the harmony with the surrounding environment is achieved.
Owner:广州市冠维视讯科技有限公司

Single-layer orthogonal-structure magnetoelectric multiferroic ceramic and preparation method thereof

The invention discloses single-layer orthogonal-structure magnetoelectric multiferroic ceramic and a preparation method thereof. The lattice parameters of the ceramic are as follows: the chemical formula is LaFe<0.5>Co<0.5>O3 (LCFO), and the molecular weight is 244.29; the crystal system is an orthorhombic crystal system; the space group is pbnm; a is 5.521(9) angstroms; b is 5.530(0) angstroms; cis 7.812(7) angstroms; alpha=beta=gamma=90o; the volume is 238.5(69). The preparation method comprises the following steps: preparing precursor powder of the LaFe<0.5>Co<0.5>O3 (LCFO), and preparingthe ceramic from the precursor powder. According to the method, the preparation temperature of the single-layer multiferroic ceramic is greatly reduced, the magnetic performance of the obtained ceramic sample is remarkably improved, the density is high, the microcosmic particle size is uniform, the technological process is simple and stable, the sintering temperature is low, the reaction period isshort, raw materials are non-toxic, and environmental coordination is better achieved.
Owner:YANGZHOU UNIV

Environment coordination type preparation method of nano titanium dioxide powder

InactiveCN102887543AOvercoming the fatal flawAchieve the technical effect of removing dregs and extracting essenceNanotechnologyTitanium dioxideWater basedPore distribution
The invention discloses an environment coordination type preparation method of nano titanium dioxide powder, which comprises the steps of: by using green resource water as a single solvent, one of tetrabutyl titanate, titanium dioxide, titanyl sulfate, metatitanic acid, titanium sulfate and titanium tetrachloride as a titanium source, ammonia water or urea as a neutralizing agent, and ammonium nitrate as a combustion improver, introducing the ammonium nitrate by adopting the ammonia water and nitric acid or singly adding the ammonium nitrate, using lactic acid as a stabilizing agent, a chelating agent, a swelling agent and a pore-forming agent, preparing sol at room temperature by adopting a water-based sol-gel method, regulating the pH value by the sol, obtaining cream yellow opaque gel after the solvent is removed, spontaneously igniting, swelling and pore-forming the gel to obtain a nano pyrophorus, and thermally treating the pyrophorus for 0.5-1h at the temperature of 500-800 DEG C to prepare the nano titanium dioxide powder with different crystal phase structures. The prepared nano titanium dioxide powder has the advantages of no agglomeration, porous nano thin layer, uniform pore distribution, uniformity in pores and larger specific surface area.
Owner:CHINA WEST NORMAL UNIVERSITY

An ecological treatment device for replenishing landscape water with recycled water

The invention relates to an ecological treatment device for supplying recycled water to landscape water. The ecological treatment device comprises a pretreatment pond, an anaerobe pond, an artificial subsurface wetland, a biological filter and a landscape water pond. The anaerobe pond is connected with the pretreatment pond. An overflow weir is arranged between the anaerobe pond and the pretreatment pond, and overflow holes are formed in the overflow weir. The anaerobe pond outlet water of the anaerobe pond is connected with wetland inlet water of the artificial subsurface wetland. The artificial subsurface wetland is arranged around a residential district building. The wetland outlet water of the artificial subsurface wetland is connected with the biological filter inlet water of the biological filter. The biological filter outlet water of the biological filter is connected with the landscape water pond. The landscape water pond is arranged at the center or the low position of a residential district. The ecological treatment device treats domestic sewage of the urban residential district into landscape entertainment water; the device is arranged according to the terrain of the residential district, construction and management are easy, no power facility is needed during running, energy is saved, the device is environmentally friendly, efficient running of a wetland system is guaranteed, resources are saved, and the environment is beautified.
Owner:WATER RESOURCES RES INST OF SHANDONG PROVINCE

Variable-thickness titanium alloy skin integrated forming method

The invention relates to a variable-thickness titanium alloy skin integrated forming method, which belongs to the technical field of titanium alloy precision forming, and solves the problems that in the prior art, the material utilization rate is low, the machining efficiency is low, and an existing chemical milling forming process pollutes the environment. Thevariable-thickness titanium alloy skin integrated forming method is characterized in that an outer skin, a gradient reinforcing plate and an inner skin are integrally formed through a high-temperature diffusion bonding technology, and the gradient reinforcing plate is used for adjusting the thickness of the formed skin and is clamped between the outer skin and the inner skin. According to the method, a traditional chemical milling technology is abandoned, environmental pollution is reduced, the requirement for the assembly thickness of the periphery and the framework of the skin part and the requirement for internal thin wall light weight are met, the production efficiency is improved by 30%, the material utilization rate is improved by 60%, and the product percent of pass is improved by 10%.
Owner:BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP

Method for constructing simple buried rural household sewage treatment system

The invention belongs to the field of rural sewage treatment, and particularly relates to a method for constructing a simple buried rural household sewage treatment system. The method is mainly started from the goals of sewage purification and cyclic utilization of water resources, a sewage colleting pond, a sewage treatment pond and a clear water pond are constructed, and the three-section type simple buried rural household sewage treatment system is constructed. Independent sewage treatment of scattered residents can be achieved, the situation that villages are dirty, disordered and poor can be gradually relieved, and harmonious development of resources, energy and environment is achieved. Meanwhile, treated clear water can also be used for toilet flushing and greening, so that the utilization efficiency of the water resources is improved, rural life environment degradation caused by random emissions of sewage is avoided, and cyclic utilization of the water resources is achieved.
Owner:YUNNAN AGRICULTURAL UNIVERSITY

Environment coordination type preparation method of nano titanium dioxide powder

InactiveCN102887543BOvercoming the fatal flawAchieve the technical effect of removing dregs and extracting essenceNanotechnologyTitanium dioxideWater basedPore distribution
The invention discloses an environment coordination type preparation method of nano titanium dioxide powder, which comprises the steps of: by using green resource water as a single solvent, one of tetrabutyl titanate, titanium dioxide, titanyl sulfate, metatitanic acid, titanium sulfate and titanium tetrachloride as a titanium source, ammonia water or urea as a neutralizing agent, and ammonium nitrate as a combustion improver, introducing the ammonium nitrate by adopting the ammonia water and nitric acid or singly adding the ammonium nitrate, using lactic acid as a stabilizing agent, a chelating agent, a swelling agent and a pore-forming agent, preparing sol at room temperature by adopting a water-based sol-gel method, regulating the pH value by the sol, obtaining cream yellow opaque gel after the solvent is removed, spontaneously igniting, swelling and pore-forming the gel to obtain a nano pyrophorus, and thermally treating the pyrophorus for 0.5-1h at the temperature of 500-800 DEG C to prepare the nano titanium dioxide powder with different crystal phase structures. The prepared nano titanium dioxide powder has the advantages of no agglomeration, porous nano thin layer, uniform pore distribution, uniformity in pores and larger specific surface area.
Owner:CHINA WEST NORMAL UNIVERSITY

Amorphous alloy oil-immersed transformer using micro-perforated plate

The invention provides an amorphous alloy oil-immersed transformer employing micro-perforated panels. The amorphous alloy oil-immersed transformer comprises a specially designed transformer oil tank, the micro-perforated panels, a hollow cavity, shock pads and a high-voltage bushing, a low-voltage bushing and a high-voltage tap switch, wherein the specially designed micro-perforated panels are arranged in the oil tank; the hollow cavity is used for serving as an acoustic impedance; one shock pad is arranged between a transformer body and the tank bottom; the other shock pad is arranged between a hanger plate and a clamp; transformer oil is used as an insulating and cooling medium; the high-voltage bushing, the low-voltage bushing and the high-voltage tap switch are arranged on a tank cover; and a sound absorber comprises one or more micro-perforated panels and the single hollow cavity or a plurality of hollow cavities. The micro-perforated panels form a helmholtz resonant cavity after being installed on the inner side wall of the amorphous alloy oil-immersed transformer oil tank, can absorb energy of vibration caused by iron core magnetostriction and coil vibration caused by electrodynamic force, and finally reduce the noise. Due to the adoption of an amorphous alloy iron core, the amorphous alloy oil-immersed transformer can save more energy than a traditional transformer; the oil tank provided with the micro-perforated panels can absorb vibration of the maximum amplitude corresponding to the iron core vibration frequency; and the noise of the micro-perforated panels is reduced.
Owner:JIANGXI UNIV OF SCI & TECH

A special fertilizer for increasing the original ecological fragrance of ginger and its application

InactiveCN104557262BRegulating Secondary Metabolic PathwaysIncrease the original spicy aromaSuperphosphatesMagnesium fertilisersManganesePulverized fuel ash
The invention belongs to the field of crop fertilizers, and particularly relates to a specific fertilizer for improving natural fragrance of ginger. The specific fertilizer consists of urea, calcium superphosphate, potassium sulfate, potassium fulvate, magnesium sulfate, manganese sulfate, aroma-increasing activator and pulverized fuel ash. According to the fertilizer requirement characteristics for growth of ginger, the nutrient content of the specific fertilizer is reasonably arranged, the aroma-increasing activator can be used for promoting synthesis of spicy fragrant substances in ginger bodies, meanwhile, trace elements magnesium and iron can be used for activating the catalytic activity of key enzymes for synthesizing spicy fragrant substances in ginger bodies, the content of spicy substances in the ginger bodies can be increased, and the natural fragrance of the ginger can be rich. When the specific fertilizer is applied as base fertilizer, the yield of ginger can be increased, spicy substances of ginger can be increased, and the natural fragrance of ginger can be rich. The specific fertilizer has a relatively high market application value.
Owner:黄冈市奥奇姆生物科技有限公司 +2

Transparent display color temperature adjustment system and transparent display color temperature adjustment method

The invention provides a transparent display color temperature adjustment system and a transparent display color temperature adjustment method. The system selects a "display mode" or "fusion mode" through a mode selection module (1), and selects a "display mode" or "fusion mode" through a display color temperature adjustment module (2). The color temperature of the environment where the transparent display (4) is located provides different color temperature adjustment results obtained by the working mode of the environment color temperature detection module (3). The set fixed color temperature is used as the color temperature adjustment result; when the user selects the "fusion mode", the display color temperature adjustment module (2) is consistent with the color temperature of the environment where the transparent display (4) is located obtained by the environmental color temperature detection module (3) The color temperature is the color temperature adjustment result, and the transparent display (4) is controlled by the display color temperature adjustment module (2) to perform transparent display at a corresponding color temperature, so as to realize different color temperature adjustments according to the working modes of the transparent display.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD

Thin-film capacitor structure for direct-current link circuits

The invention discloses a thin-film capacitor structure for direct-current link circuits. The thin-film capacitor structure comprises a bottom layer and an outer layer, wherein the bottom layer is a double-margin metalized T-shaped safety thin film, the outer layer is a middle-margin double-side metalized thin film, and the width of optical film at the margin of the middle-margin double-side metalized thin film is 3 mm. The thin-film capacitor structure is made of common raw materials and is compatible with existing thin-film capacitor processes, and capacitors of the structure have good over-current capacity and self-healing capacity and long service lives.
Owner:YANGZHOU KAIPU ELECTRONICS

Vehicle advertising control method, device, equipment and system based on regional attributes

InactiveCN110009411BImprove the environmentGood for playing goalsMarketingIn vehicleData mining
The present invention provides an on-vehicle advertisement control method based on regional attributes, the method comprising: obtaining the current geographic location; judging the current regional attribute according to the current geographic location; querying the advertisements in the advertisement list that are suitable for the current regional attribute; playing the advertisement corresponding to the current regional attribute attributes to match the ad. The invention solves the problem that the vehicle-mounted advertising screen in the prior art may affect the urban landscape, and provides a vehicle-mounted advertisement control method, device, equipment and system based on area attributes that coordinate the advertisement content with the surrounding environment.
Owner:广东邮电职业技术学院

Amorphous alloy oil-immersed transformer oil tank with noise reduction function

The invention relates to the technical field of transformers, and discloses an amorphous alloy oil-immersed transformer oil tank with a noise reduction function. The amorphous alloy oil-immersed transformer oil tank comprises a transformer oil tank (17), wherein a shock absorption pad is arranged between the transformer oil tank (17) and a base (15); a first clamping piece (9) is arranged in the transformer oil tank (17); the first clamping piece (9) is horizontally distributed; two first reinforcing ribs (22) are arranged on the first clamping piece (9); a second reinforcing rib (21) is arranged between the two first reinforcing ribs (22); an H-shaped structure is formed by the two first reinforcing ribs (22) and the second reinforcing rib (21); two third reinforcing ribs (23) are arranged on the side wall of the transformer oil tank (17) along the vertical direction; a fourth reinforcing rib (24) is arranged between the two third reinforcing ribs (23); an H-shaped structure is formed by the two third reinforcing ribs (23) and the fourth reinforcing rib (24). According to the amorphous alloy oil-immersed transformer oil tank disclosed by the invention, through the H-shaped structures formed by the first clamping piece and the side wall of the transformer oil tank, the noise of a transformer is reduced under the situation that the magnetic density is not changed, and the problem in the prior art that the noise of the transformer is large is solved.
Owner:SANBIAN SCI TECH

Mudstone ecological slope protection structure of columnar geogrid foundation bed

The invention discloses a mudstone ecological slope protection structure of a columnar geogrid foundation bed. The structure is used for a riverway with the flow rate of 4.0 m / s or below and comprisesa layer of rock blocks laid on a slope surface of the riverway at intervals, soil is filled among the rock blocks, the columnar geogrid foundation bed is buried in the soil, herbaceous plants are planted in the soil, and the soil content of the soil is 50-60%. The structure has the advantages that the quantity of the rock blocks is small, the influence on the environment is small, the rock blocksare arranged randomly, the soil content among the rock blocks can reach 60%, the quantity of the rock blocks is small, and the influence of rock block mining on the ecological environment is reduced.The anti-scour effect is good and the manufacturing cost is low. A geogrid is embedded into a soil body in a columnar shape, and the embedding and fixing effect like a soil nail is achieved. The geogrid is wound with plant root systems, and a rock block framework is added for supporting, so that the scour resistance of a slope protection is remarkably improved. The geogrid is low in cost, so thatthe total manufacturing cost is not high. The structure is suitable for a slope type bank slope protection with the designed flow rate smaller than 4 m / s.
Owner:浙江广川工程咨询有限公司

A bio-high temperature gasification combined mining method for hydrogen production from coal

The invention discloses a bio-high-temperature gasification combined mining method for producing hydrogen from coal, which comprises: drilling two horizontal well groups located on the same horizontal plane in a coal seam, setting casing and cementing the wells; performing hydraulic fracturing on the two wells at the same time to form critical cracks Fracture network: carry out alkali treatment on the coal seam, inject the coal-based hydrogen-producing microbial bacterial liquid into the coal seam in two horizontal wells, the strain spreads along the critical cracks, dynamically monitor the temperature and pressure of the strain to prevent its inactivation, and use the temperature and pressure conditions of the coal seam to promote the microbial stripping of coal Carbon and hydrogen-containing functional groups are captured and metabolized, and the organic components in coal are degraded in multiple stages to produce hydrogen, carbon dioxide and small molecular acids, so as to realize the in-situ separation of carbon and hydrogen in coal and make hydrogen; when the bottom hole pressure reaches the peak value and remains stable, hydrogen will be discharged and recovered ; For the remaining coal seam, hydrogen is produced by gasification of supercritical water and high-temperature carbon, and the gas is extracted and then grouted to fill the burn-out area. The invention subverts the traditional coal mining technology system through the multi-stage utilization of bio-high temperature gasification, and realizes low-carbon, green and efficient development of coal.
Owner:CHINA UNIV OF MINING & TECH

Multiferroic ferrotitanium bismuth cobaltates ceramic material with laminated structure and preparation method thereof

The invention relates to a multiferroic ferrotitanium bismuth cobaltates ceramic material with laminated structure and a preparation method thereof, which pertains to the technical field of oxide ceramic material preparation. Bi4Ti3O12 and BiCoO3 are implanted in BiFeO3 to generate Bi5Fe0.5Co0.5Ti3O15 (BFCT). The technology is simple and reasonable, and has good compatibility with current solid phase technology; the sample preparation temperature is far lower than that of current technology, thus greatly reducing energy consumption and facilitating industrialized production. In the BFCT, due to relative orderly arrangement of Fe-O and Co-O octahedron, local coupling of Fe-O-Co can be obtained, thus leading the magnetism of sample to be high.
Owner:YANGZHOU UNIV
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